When you ask "What number is halfway between 84 and 997?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=84 and Y=997.
To find the number halfway between 84 and 997, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 84 and 997 into our formula, we get:
(84 + 997)/2 = 540.5
Thus, the number halfway between 84 and 997 is 540.5.
To check that our answer is correct, we subtract 84 from 540.5 and subtract 540.5 from 997 and compare the two numbers:
540.5 - 84 = 456.5
997 - 540.5 = 456.5
As you can see, the halfway number is 456.5 higher than 84 and 456.5 lower than 997. Therefore, our halfway between answer of 540.5 above is correct.
Halfway Between
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Halfway Between 84 and 998
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